Heating Wiring

Heating control wiring, terminal by terminal, for UK electricians and heating engineers. Pick the system or the receiver on the wall and see every terminal: what it does, where each wire goes and what colour it is. Tap a terminal on the strip to jump to it, or show one part at a time, such as just the hot water valve. - S plan and Y plan on a wiring centre, open to everyone - C plan, S plan plus with three zones, and combi boilers on a 230 V switched live or on relay contacts only - Pump overrun boilers: the terminals that change are marked - Receiver and programmer terminals for Honeywell Home, Hive, Google Nest, Drayton, Danfoss and Salus models - A step-by-step fault-finder for each system - Commissioning checklists you can tick off on the job - A job sheet with customer, system, checks and notes, exported as an A4 PDF Every drawing names the document and page it was traced from. Where a drawing could not be read with certainty, it is left out and the app says so. Full access is an auto-renewing subscription, monthly or yearly. It renews unless you cancel at least 24 hours before the end of the period. Manage or cancel in your Apple Account settings. Isolate and prove dead before working on any circuit. Always follow the instructions supplied with the product you are fitting. Independent reference from Sparky Papers. Not produced, endorsed or approved by Honeywell, Resideo, Hive, Google, Drayton, Danfoss or Salus. Product names are used only to say which products a drawing covers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.sparkypapers.co.uk/privacy/